Capacity: 5200mAh (Better than 4400mAh). Battery does NOT require to install software. No need to mess with the Bios of your laptop anymore. This product is good for all the following Models and Part#.

100% New Components - never refurbished, recycles, or used. Non-OEM but 100% Compatible - Guaranteed to meet the specifications of your original device. Nearly all our products have UL, CE and RoHS certificates. We stand behind our quality products.

Your receive the wrong or defective item. The item "Battery for Sony VGP-BPS13A/B VGP-BPS13B/Q VGP-BPS21A VGP-BPS21B Window7 Black" is in sale since Tuesday, May 7, 2013. This item is in the category "Computers/Tablets & Networking\Laptop & Desktop Accessories\Laptop Batteries". The seller is "portportal" and is located in Seattle, Washington.